Alley in Pisa, Italy

by Lars Kotthoff

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321 reputation
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bio website selimarikan.com
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visits member for 1 year, 5 months
seen 2 hours ago

Jul
21
comment How to photograph sparkly objects?
Can you provide some sample shots for this ?
Jul
9
awarded  Informed
Jul
9
awarded  Critic
Jul
3
comment Noticible diff. using Display port versus DVI on Eizo ColorEdge Monitor?
If we talk about CIE1994 graphic arts deltaE value of color difference with using standard D65 white point and sRGB, in theory between DVI(8bits per channel) and DP(10bits per channel), a maximum value of 0.18 deltaE difference/error can be exist. So 0.18 dE is really low to be able to distinguish with human eye.
Jul
3
comment Noticible diff. using Display port versus DVI on Eizo ColorEdge Monitor?
If you read the question, issue here is not the lacking of the cable but the graphics card.
Jun
30
awarded  Yearling
Jun
30
comment RGB colour correction of CCD camera images
In the beginning poster had doubts on CCD quality and chromatic aberration, finally we have concluded that issue is caused by the sensor or at the reconstruction step of the camera which both IMHO makes this question relevant.
Jun
30
comment RGB colour correction of CCD camera images
This is actually your preference. I have cropped the image as you can see from the bottom part of it. If you need to keep the original image size, you can choose to put black pixels to suit the background.
Jun
30
answered RGB colour correction of CCD camera images
Jun
30
comment RGB colour correction of CCD camera images
I see that your image is quantized to 32 levels. And hue is shifted vertically not only close to the edges (ch. aberration) but in the whole image (i.imgur.com/Rcna2de.png). My opinion is, something is wrong with the camera's image processor or worse, CCD.
Jun
30
comment RGB colour correction of CCD camera images
Looks like chromatic aberration but I am seeing that it is present in all of the image. How are you getting your images ? Are you using Bayer filter ? Something can be wrong on the reconstruction step from color coded image. Additionally just an idea, if you are going to check only the QR codes, you can consider using grayscale images.
Jun
2
comment Techniques for photographing stained glass?
Rather than solving this issue completely in shooting, you can always fix it in editing. The solution is to have background as dark as possible while shooting. Afterwards you can adjust "blacks" and "whites" values accordingly with your software as it pleases you.
May
28
answered Should I return my new wide-gamut monitor or buy an expensive calibrator?
Apr
15
awarded  Commentator
Apr
15
comment Is image stabilization a necessary feature for wide angle lenses?
@MichaelClark It is good to know that in the new lenses they have addressed that problem, it was a trouble before. Thank you for the information.
Apr
14
comment Is image stabilization a necessary feature for wide angle lenses?
One thing may be added here, you should turn off IS when using tripod. It would do more harm than good.
Mar
28
answered How can I best add depth sharpness with Adobe Photoshop?
Mar
28
comment Workflow tool for Race number OCR
As Imre mentioned, using only OCR without any specifying or narrowing information would produce very low success. Because of the subjects are dynamic, their number tags would have a lot of variety such as wrinkling, skewness, perspective distortion and much more. Unfortunately this automated (computer only) solution is not feasible.
Mar
21
awarded  Citizen Patrol
Mar
14
comment Image manipulation
I can say that paper has different noise pattern comparing with the rest of the picture. Furthermore bottom right part of the paper has no noise at all, this indicates paper is altered or added externally. Paper edge noise suggests paper was originally there but contents of it is altered. Probably something is removed from the bottom right part of the paper.